CN1695823A - Device system and method for delivering active fluids to remote application sites - Google Patents
Device system and method for delivering active fluids to remote application sites Download PDFInfo
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- CN1695823A CN1695823A CN 200410054426 CN200410054426A CN1695823A CN 1695823 A CN1695823 A CN 1695823A CN 200410054426 CN200410054426 CN 200410054426 CN 200410054426 A CN200410054426 A CN 200410054426A CN 1695823 A CN1695823 A CN 1695823A
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Abstract
The active fluids which react upon contact and are to be combined only at remote or inaccessible sites are delivered to the site by separate crescent internal gear pumps whose pumping rates are governed by a control loop using individual mass flow meters and a common automatic controller. In the preferred embodiment, a multiple interstitial cable is used to transport the pump outputs individually to the application site, while an applicator head at the distal end of the cable combines and dispenses the individual fluids to the desired location. The present invention can be used in many different reactive systems and applications, but is particularly effective when used to apply a two-part epoxy liner to an underground pipe.
Description
Technical field
What the present invention relates to is the field of fluid delivery system, is used for supplying multiple material with the flow and the flow-rate ratio of control to remote place.
Background technology
In many construction sites and different commercial operation, may have that two or more fluids must separate and be transferred into remote place with the flow or the flow-rate ratio of control.The example of these operations has by applying one deck lining or locate daub mud to repair underground piping in the crack of tube wall on the inner surface of pipe.The example that also has be in the house or the construction site such as bridge, parking lot structure and house foundation place supply liquid or fluent material, these places often can not be directly approaching.The example that has again be exactly to mine, manhole, nowel jar or storagetank, sub sea location and dam supply material.Must supply dividually and its ratio must strict control example of material be some active components.Must avoid between them reacting mutually prematurely and will keep the stoichiometry of reaction.The combination system, epoxy resin for example, polyurethane, polyureas and polyacrylamide are significant examples.
Be used to transport water, sewage, or the underground piping of draining is best illustrative.These pipelines are owing to the growth of burn into organic matter, the infiltration of root, traffic load, and move on ground and run-of-the-mill is degenerated is easy to be damaged.This degeneration causes the liquid stream by pipeline to be obstructed, sometimes even cause the collapse of pipe.The sewer pipe of a degeneration for example, can make sewage spill, and has stain the formation of underground water and soil, perhaps, has unnecessarily increased to the flow of handling the building site thereby also may allow underground water infiltrate.
It is very expensive changing the sewer pipe, and replacing regular meeting causes on the serious ground chaotic.For fear of these confusions, developed not need to change underground pipe or excavate ditch and replace and use remote control thereof on tube wall, to apply the method for one deck lining with the reparation sewer pipe.
A kind of method of lining of adding on the spot is included in the pipe and inserts a softness of being made by curable resin and flexible tubulose lining ring.In case after inserting, lining ring tightly is pressed in by fluid or air and makes its curing on the tube wall.This operation sequence is very thorny, because uncured lining ring is difficult in operation in the pipe, nor can guarantee fully that lining ring is placed suitably or is subjected to suppressing equably to obtain desirable reparation degree on its whole length.
Another kind of is to insert a long flexible conduit and spray a kind of resin in the end of pipe by a nozzle to be coated on the tube inner wall in pipe by remote control coating method of lining, makes resin solidify on the spot after the ejection.Many resins of Tu Fuing are bi-component resins by this way, epoxy resin for example, Polyoxyethylene este, and polyureas.In order to obtain maximum effect, two components of these reactive resin systems must keep separately, wait until when their arrive application site in the pipe always till, so they must be inhaled by pump dividually.To the coating of this mode, present pump absorbing method uses the reciprocating type proportioning pump of mechanical servo-actuated.
In general, a difficulty of bi-component reactive resin system and multicomponent reactive systems is that various component all is that the excess of any component all can cause the existence of unreacted material at resin solidification later on a specific stoichiometric ratio phase reaction.Except because of feed-in unreacted material causes not having the effect, stay the quality that the interior unreacted components of resin also will reduce lining.In addition, unreacted component may be let out from lining lentamente and be leached the fluid that has stain the pipe of flowing through.For the efficient of maximum, the quality of lining reach sometimes also for safety, therefore the accurate stoichiometric ratio of keeping two kinds of components in application site is very important.
When using proportioning pump, the accepting of flow-rate ratio controlled and stability can only obtain under the pump speed far below this pump capacity, because the pressure of representing the most pulsation of the feature of these pumps all to be in before stroke is finished to gather on the flexible conduit between pump and the spray nozzle and suppressed by nozzle itself next time.When the distal end of catheter place do not have counter-pressure or seldom during counter-pressure problem with regard to especially severe.Yet the common ability of proportioning pump is lower than 3 gallons of per minutes (per hour 0.7 cubic metre).Therefore, in order to reduce the pulsation of these pumps, pump speed must be limited in 1 gallon of about per minute (per hour 0.23 cubic metre).This is an acceptable for small-bore pipe, but not all right to bigbore pipe, however in many sewer systems neutralize other fortune aqueous systems usually usefulness all be the heavy caliber pipe.Also have proportioning pump having very limited changeability aspect the ratio adjustment, because they are arranged by the cylinder ratio of pump.
Another difficulty of bi-component reactive systems is that the flow of component can be because viscosity, the difference of temperature the and influence other factors of density of fraction, and the wear intensity of pump and be used as the flexible pipe situation of conduit and change.Flow is all weighed by pressure drop usually, and viscosity, temperature and top listed other factors can both influence the pressure drop of being stained with flow channel thereby provide with mass flow and change irrelevant reading.
Summary of the invention
According to present discovery, can only off-site location just contacted various ingredients be can be by the flow of each component is comprised that with the flow of height ratio control and wide region high volume flow is transferred into this position.This finds that go to the building site in ground for applying the pipe lining of being made up of multi-component material on the spot and the position of locating for any place comprises the construction site, and building site, seabed and aforesaid other remote position are of great use.This result reaches by a kind of system of installing, this system comprises the crescent crescent gear pump that separates and control loop that is used for each independent active component, and this loop comprises each flowmeter of the mass flow of measuring each component again and the flow that records and a previously selected numerical value made comparisons and sends signal and correct a automatic controller with the deviation of predetermined value to regulate pump speed.Kong Zhi fluid is by conduit separately by this way, preferably a kind of many intralamellar spaces cable that includes the intralamellar space that individual components is separated is transported to remote position, no matter be the inside of a pipe, a maccessiable construction site or other any application places listed above.Each component is combined in together in the relevant place at distal end of catheter place, and deposition, distributes, or spreads apart.
Crescent crescent gear pump provides one not have the smooth flow of pulsation and continuous variation on flow-rate ratio, goes to correct with slightly deviation of ideal ratio unlikely to regulating in addition the restriction based on equipment with the continuous adjusting of allowing convection cell.The quality flowmeter allows that this system is by quality rather than the control of ratio is provided by pressure drop.Mass flow control allows to keep the stoichiometry of reaction continuously and accurately, and has avoided the adjusting based on the factor that can influence decline of density of fraction or pressure rather than quality.
In some applications, except main reactive component, also may comprise system component, in order that improve the character that is deposited material, for example, the physics of lining or chemical characteristic in the situation of pipe lining, or in order to add the speed of fast response, or usually in order to change any parameter or the feature of process.System of the present invention can optionally include the component that these add in addition, allows that they are to be inhaled by pump individually with the flow of key component the same manner control and to be sent to application places.
These and other feature of the present invention, advantage and embodiment will be described in detail in the subsequent section of this specification.
Description of drawings
Fig. 1 is the process flow chart according to pipe lining system of the present invention;
Fig. 2 is applicable to the cross-sectional view of intralamellar space cable more than that transports the independent component of pipe lining composition by a underground piping.
The specific embodiment
A crescent crescent gear pump has two Knucle-gears, just, an external gear that has inside stretching, extension tooth is meshed with an internal gear that has outside stretching, extension tooth, two gears rotate in a common shell still and are positioned on the different parallel axes, parallel axes makes two gears be in eccentric relation, and between is reserved a half moon-shaped space.The half moon-shaped spaces of the overwhelming majority are occupied by a half moon-shaped insert, and insert is only reserved gap closely between the crown of itself and gear.Any can be used as driven wheel in two gears, though preferably with internal tooth crop rotation driven wheel.Just start out a plurality of spaces between them when the tooth of gear breaks away from engagement, gear rotates the space-time crack and expands immediately and produce a suction fluid is introduced space between the gear, enters in the pump thus.Get back to engagement again when gear, the volume that tooth rim encloses reduces again, thereby has increased pressure and force fluid to pass an outlet to be discharged from.Flow is exactly to be determined by the velocity of rotation of gear like this.Typical crescent crescent gear pump has 17 teeth having 13 teeth on the internal gear on external gear, the speed of actuating is approximately 400 to 6000rpm, preferably be approximately 700 to 3600rpm, and the discharge rate of rotating each time is about 0.3 to 15 cubic inch (about 0.005 to 0.25 liter).More desirable pump is those pressure pumps from about 2000psi to about 6000psi with continuous adjustment rate, and its maximum pressure is to about 5000psi from about 3000psi.No matter be that single-stage pump or multistage pump (normally twin-stage) can use.Crescent crescent gear pump can both be bought from the pump suppliers on market, for example the Imo pump of North Carolina door sieve.
Each crescent crescent gear pump can have conventional engine variable or adjustable frequency drives by one and be driven.The frequency drives of this pattern can be bought immediately from the market supply merchant, for example the U.S. Fuji electric corporation of N.J. Saddle Brook.The pump that is in particular the frequency drives engine design can be that the GE industrial system of Di's lattice state Plainvillc and the Baldor electric corporation of U.S. Arkansas State Fort Smith are buied from U.S.'s health.A kind of typical frequency drives is can be from Fuji electric corporation and the Model AF-300Gil that buys from the GE industrial system.
According to the present invention, mass flow is to use a kind of flowmeter survey of known structure, what its operating principle was that its measures is mass flow and do not measure simple volume or linear flow, is subjected to also and indistinctively influencing that pressure descends or the influence of the flow parameter that other has nothing to do with mass flow.
The mass flowmenter of various different types all is well-known and can buys on market.Wherein any pattern can both be applied in the practice of the present invention.Also comprise thermal flow meter in the flowmeter of these patterns, electronic flowmeter, and Coriolis (Coriolis) formula flowmeter, wherein suitable with the Coriolis-type flowmeter.
In the Coriolis-type flowmeter, the flexible pipe that the fluid of its mass flow to be measured is flowed through and vibrated and swing, this is because an electromagnetic gear applies due to the sine voltage.The fluid that flows applies Coriolis-type on flexible pipe, has changed mode of oscillation, makes that the oscillation phase of several points of being stained with flexible pipe is inharmonious with the phase place of other point on flexible pipe.This different size is directly connected to the mass flow of passing flexible pipe and is used as a kind of method of measuring mass flow.This Coriolis-type mass flowmeter can instrument suppliers from the market be buied, for example, and the U.S. Yokogawa company of the Endress+Hauser company of Indiana, USA Greenwood and Georgia State, USA Newnan.
Process control automatically can be reached by the software of routine, and this software can use skilled people to program soon by any computer control to chemical process.The software example that can use effectively is installed in people's computer one by one exactly, for example the LabVIEW process control software on IBM compatible computer.
Other active component is transported to application places, this application places may be a tube interior or other remote or maccessiable position, be to reach by using conventional fluid flow conduits, when this conduit can make each component remain separately to wait until the arrival application places always till.Optimal conduit is the sort of conduit that can be passed with the speed pulling of control by a remote driver in the example of tube interior.Thereby the conduit of pipe can deposit a coating that thickness is suitable along tube wall.Various other components are just mixed at the far-end of conduit and are transported out as mixture, are deposited on the application site place and react mutually in this while.Independent conduit is can be enough, though had better use a kind of many intralamellar spaces cable (common be called a kind of " connection cable " in the field of business) to be used as a feed-in line to component.Best many intralamellar spaces cable had both comprised the intralamellar space of the component that is used for the lining composition, also included in addition to be used for temperature controlled intralamellar space, for example added circumfluence or any other liquid heat transfer medium of hot water.More intralamellar space can also be included to be used as the purpose that other adds, for example to applicator head supply electric power at the dynamic device of cable end, the temperature and pressure sensor is provided, accept and send signal from the temperature and pressure sensor, vision signal provides in the cable end to the control of robot utensil and to a light source and supplies electric power to strengthen video transmitter to allow the video picture of observing the coating position on (for example ground) watch-dog a long way off to provide signal for example to transmit.
Applicator at many intralamellar spaces cable far-end can be any device, and it lumps together each component, the desired coating place of then they being led.Be to apply lining in an embodiment of the present invention to tube wall, applicator can be a spray nozzle, have or not the air boosting can, a pectinid device, a centrigugal casting machine, the blowoff on perhaps any other periphery around the pipe of mixture being led equably.For coating of the present invention, wherein need the coatings of 360 degree, preferably use a kind of rotary sprayer, particularly a kind of have the sort of of rotor that two whiles rotate in the opposite direction.In tube interior applies, this will be avoided or reduce the difference of any coating layer thickness, this species diversity otherwise will form around the highlight of tube wall surface or other irregular place.Sprayer can be installed in the go-cart, this so-called go-cart can be impelled the length of being stained with pipe with minimum resistance to advance and sprayer is placed in the center that is approximately pipe with referring to any movably bearing here, thereby the axis that sprayer is being stained with pipe when conduit is passed pipe and spurs is advanced.
The present invention is applicable to the deposition of some synthetic, and this synthetic is to be reacted when contacting and formed by two or more components, so they must be held and do not contact, when waiting their to arrive to apply place till to prevent too early reaction.This description is applicable to many polymer.The polymeric system example of two components includes, but is not limited in epoxy resin, polyurethane, polyureas and polyester.Wherein merit attention most, particularly for the coating of pipe lining with epoxy resin.In order to bring into play optimum operation usefulness, independent component is maintained in the predetermined temperature range with control viscosity and uniform density of maintenance.
According to the present invention, can also comprise the pump that adds in addition in the device system and transport line being supplied to ground mixing place or being supplied to the coating place by the intralamellar space that separates in many intralamellar spaces cable with the component that other is added.For polymeric system, this component that adds in addition can comprise conditioning agent, gelling agent for example, and accelerator, catalyst, and diluent perhaps anyly can be used to control the physics of reaction speed or polymer coating or the component of chemical characteristic.
The system of describing among Fig. 1 is represented a kind of pipe lining system, though the present invention also can be implemented by many different configurations and arrangement.In this system, in the regulating box 11 and 12 that separates, regulating box is one and adds the sheath body container two components of a bi-component polymeric, the water that heats from 13 supplies of a boiler by independent water pump 14,15 in its sheath body by seasoning.This container also can wrap with inert gas.Two components that form polymer are drawn in regulating box by primary pump 16,17, and the primary pump in this example is conventional triple helical pump.The example that is suitable for can be buied from Imo pump company and other pump supplier on market.Helicoidal pump passes the regulating box circumfluence with component via recirculation loop 18,19.
So each component stream by crescent crescent gear pump 21,22 from the reflux line sucking-off again indivedual intralamellar spaces of the many intralamellar spaces of feed-in or " connection " cable 23.The mass flow that produced by crescent crescent gear pump is by dividing other Coriolis- type flowmeter 24,25 to detect.Triple valve 26,27 makes the output of pump or leads and is back to recirculation loop 18,19 or guiding connection cable on the outlet line of each crescent crescent gear pump.
The top, ground that connects cable 23 is installed on the reel 28, and is pulled on the reel or from it by a linear cable traction device 29 and pulls out, and draw-gear is being controlled the linear speed of cable.The temperature of cable by a water pump 30 from boiler 13 respectively hot-water supply controlled.The temperature that another kind of way is a cable is controlled by an electric heater (not shown) that extends the cable total length.There are 34, one fixed or movable blenders 31 of a video picture video camera and one to be contained in an applicator head 32 in the go-cart 33 at the far-end that connects cable.Comprise that also a video picture video camera 34 is in order to allow before the coating operation is carried out or the inside of underway observation pipe.
A sequence logic controller 41 receives from mass flowmenter 24,25 with from various data collection point on the system.Thermocouple for example, pressure sensor, the signal of cable speed indicator and fluid level indicator (all not shown in the diagram), and send a signal to variant component, for example crescent crescent gear pump and linear cable traction device are with the control working procedure parameter relevant with these components.As mentioned above, be used for the component that adds in addition add in addition the feed-in circuit can add be included in connect in the cable or be used for enter connect cable before or place, any place on the process flow circuit shown in the figure mix mutually with the component of system.
Fig. 2 has described one and be applicable to connection (or the many intralamellar spaces) cable 51 that transports bi-component living polymer such as a kind of epoxy resin in practice of the present invention.Demonstrate this cable in the cross section shown in the figure and comprise an oversheath 52 that constitutes by the braiding sleeve that is embedded in the polymer.Two intralamellar spaces 53,54 are included in interior in order to transport the difference component of lining composition.In being included in, the intralamellar space 55,56 that other adds is used to add the circumfluence of hot water.These all are that closed intralamellar space is connected at far-end, and one of them is used for flowing into and another is used for refluxing.Remaining intralamellar space is by power line, pickup wire, and controller line and vision cable are shared.The fluid intralamellar space that other adds can add other additive in order to the component of polymer that transports conditioning agent or be used to apply.
Top purpose of description is in order to illustrate.
Still can embody the further change and the modification of basic principle of the present invention and can both be known from experience immediately, and be included in the scope of the present invention for being familiar with this professional personage.
Claims (22)
1, a kind of being used for can not be coated to a remote device system that applies the place with the various active fluid with reacting too early with the flow of control, and described system comprises:
A plurality of reservoirs, wherein a kind of described active fluid of each reservoir splendid attire.Each described reservoir all have one independently egress line in order to discharge the contents of described reservoir;
Crescent crescent gear pump on each described independent egress line is in order to be respectively the individual flow stream of a selected flow of each described active fluid generation;
The measurement mechanism of a plurality of mass flows is in order to the mass flow of measuring each individual flow stream continuously and the independently signal of representing each mass flow of measuring like this in order to generation;
An independent automatic controller receives all described independent signals, with described signal and speed the departing from correction and described target that target is made comparisons and arranged each crescent crescent gear pump;
A plurality of conveyers are in order to admit the output stream of described crescent crescent gear pump dividually, transport described output dividually and flow to described remote application places and described output stream is merged in described remote application places; With
Coating unit is in order to distribute the output stream of described merging in described remote application places.
2, according to the system of claim 1, the measurement mechanism of wherein said mass flow comprises a plurality of independent Coriolis-type mass flowmeters, and such flowmeter is installed on each described egress line.
3, according to the system of claim 1, wherein each described egress line comprises a recirculation loop and the earial drainage device from described recirculation loop attraction active fluid, and each described crescent crescent gear pump just is contained on the described earial drainage device.
4, the system according to claim 1 also comprises a plurality of independently variable-frequency drive engines, each described crescent crescent gear pump of described motor driven, described controller is arranged the speed of described crescent crescent gear pump by regulating described variable frequency.
5, according to the system of claim 1, wherein said mass flow determinator is placed on the upstream of described crescent crescent gear pump.
6, according to the system of claim 1, wherein said conveyer comprises many intralamellar spaces cable that has the independent intralamellar space of establishing for each described output stream.
7, according to the system of claim 1, wherein said crescent crescent gear pump respectively has from about 2000psi to the pressure at the continuous adjustment rate of about 6000psi, and its maximum pressure be from the extremely about 5000psi of about 3000psi.
8,, also comprise being used to spur the draw-gear that described conveyer passes underground pipe according to the system of claim 1.
9, according to the system of claim 1, wherein said reservoir is temperature controlled.
10, according to the system of claim 6, wherein said reservoir and described many intralamellar spaces cable all are temperature controlled.
11, according to the system of claim 6, wherein said many intralamellar spaces cable comprises that also water circumfluence intralamellar space is in order to do temperature control to other fluid that flows through described many intralamellar spaces cable.
12, according to the system of claim 1, comprise that also its configuration of go-cart can support described coating unit and keep and described pipe axial row being aligned in pipe, allow described coating unit axially to pass described pipe simultaneously and move.
13,, also comprise the mixer apparatus between described many intralamellar spaces cable and described coating dress according to the system of claim 6.
14, according to the system of claim 1, wherein said coating unit is a spray nozzle.
15, a kind of with amount of controlling and the method that the various active fluid is not coated to a remote coating place, described method comprises with not making its too early phase reaction:
(a) by each described active fluid is used other crescent crescent gear pump with described active fluid independently pump be drawn to described remote coating place, described pump is by the speed actuating of a control loop with control, this control loop comprises:
(i) a plurality of mass flowmenters, wherein each is measured a kind of mass flow of described active fluid;
(ii) a plurality of variable frequency pump drivers, wherein each drives a described crescent crescent gear pump; With
(iii) automatic controller receives the input signal from all described mass flowmenters, described input signal and the predetermined relationship in the mass flow of all described active fluids are made comparisons, and send out the difference between representative described input signal and the described predetermined relationship signal and
(b) distribute the active fluid of described merging in described remote coating place with described active fluid merging and in described remote coating place.
16, according to the method for claim 15, wherein said mass flowmenter is a Coriolis-type mass flowmeter.
17, according to the method for claim 15, wherein step (a) comprise with as the described active fluid that is drawn onto of pump transport that to be transported to described remote applied field by the indivedual intralamellar spaces in temperature controlled many intralamellar spaces cable of living in.
18, according to the method for claim 17, the control of the temperature of wherein said temperature controlled many intralamellar spaces cable is to reach by described many intralamellar spaces cable is passed in the heat-transfer fluid circumfluence of heating.
19, according to the method for claim 15, wherein step (a) comprises to get described active fluid from about per hour 1 cubic metre of extremely about per hour rate of discharge pump of 150 cubic metres.
20, according to the method for claim 15, wherein step (a) comprises to get described active fluid from about per hour 3 cubic metres of extremely about per hour rate of discharge pumps of 50 cubic metres.
21, according to the method for claim 15, wherein said remote coating place is the inside of a pipe.Step (b) comprise by one movably application head the active fluid of described merging be assigned to described tube interior and described method also comprise described removable application head with the axial line pulling of the speed of control along described pipe.
22, according to the method for claim 15, wherein said active fluid is a kind of independent component of bi-component epoxide-resin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HK04103261.2 | 2004-05-10 | ||
| HK04103261A HK1062783A2 (en) | 2004-05-10 | 2004-05-10 | System and method for delivering reactive fluids to remote application sites |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1695823A true CN1695823A (en) | 2005-11-16 |
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ID=34073707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410054426 Pending CN1695823A (en) | 2004-05-10 | 2004-07-16 | Device system and method for delivering active fluids to remote application sites |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1695823A (en) |
| HK (1) | HK1062783A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815783A (en) * | 2015-04-03 | 2015-08-05 | 上海锌裕机电设备有限公司 | Glue filling machine equipment |
| CN106460832A (en) * | 2014-05-14 | 2017-02-22 | 威华·威尔赫姆·瓦格纳股份有限两合公司 | Method for controlling a pump system and pump system |
-
2004
- 2004-05-10 HK HK04103261A patent/HK1062783A2/en not_active IP Right Cessation
- 2004-07-16 CN CN 200410054426 patent/CN1695823A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460832A (en) * | 2014-05-14 | 2017-02-22 | 威华·威尔赫姆·瓦格纳股份有限两合公司 | Method for controlling a pump system and pump system |
| CN104815783A (en) * | 2015-04-03 | 2015-08-05 | 上海锌裕机电设备有限公司 | Glue filling machine equipment |
| CN104815783B (en) * | 2015-04-03 | 2020-04-24 | 上海锌裕机电设备有限公司 | Glue-pouring machine equipment |
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| Publication number | Publication date |
|---|---|
| HK1062783A2 (en) | 2004-11-05 |
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